A、 to rise
B、 rising
C、 to raise
D、 to arise
答案：C
解析：解析:rise 不及物动词;arise 不及物动词 呈现出现 A new difficulty has arisen. 出现了新困难。
A、 to rise
B、 rising
C、 to raise
D、 to arise
答案：C
解析：解析:rise 不及物动词;arise 不及物动词 呈现出现 A new difficulty has arisen. 出现了新困难。
A. to get
B. for to get
C. for get
D. for getting
A. don＇t go
B. haven＇t gone
C. am not going
D. didn＇t go
解析：解析:used to do 过去常常做某事
解析：解析:
A. a lot more better than
B. much more better than
C. a lot better than
D. much more well than
A. was being repaired
B. was repairing
C. is repairing
D. has been repaired
A. 四项基本原则不动摇
B. 改革开放不动摇
C. 两手抓,两手都要硬的方针不动摇
D. 以经济建设为中心不动摇
解析：解析:本题考查的是党的基本路线。党中央多次强调坚持党的基本路线不动摇,关键是坚持以经济建设为中心不动摇。
A. starting
B. to start
C. have started
D. was starting
解析：解析:what were you doing提问的是过去进行时。
A. f(1)-f(0)
B. 2[f(1)-f(0)]
C. 2[f(2)-f(0)]
D. 
解析：解析:
